Elemental damage rules in NWN2 (esp. MotB), so monks will always end up being on the low end of damage when they're unarmed. However, monks are quite capable of using kamas, and with a few fighter levels (high BAB) and high dex (perfect two weapon fighting), they can dualwield them and suddenly become invinsible (as mentioned in the power build above, kaze no kama). They're no longer just good at avoiding damage - they dish out roughly 50% more than a barbarian/frenzied berserker in rage/frenzy (no, I'm not joking).